Anthony Hope's works often featured elements of romance, adventure, and intrigue, and he gained widespread popularity for his adventure stories set in fictional or historical contexts. If "The Secret of the Tower" is indeed a book by Anthony Hope, it might be a lesser-known work or a title published after my last update.For the most accurate and current information about this book, including its plot, publication details, and availability, I recommend checking online book retailers, library catalogs, or reputable literary databases. These sources can provide the latest information on the book and its content.